Why did tarrlok kill himself and amon

In the unfolding seasons of 'The Legend of Korra', the bond between Tarrlok and Amon became one of the show's most complex narratives, reflecting a destructive potential that comes from parental expectations along with sibling rivalry. Tarrlok and Noatak (Amon's true identity) were raised by a revenge-obsessed father, manipulated and weaponized at a young age. They grew to hate the things they had become and what they were doing to others. When Tarrlok saw that Amon's reach was becoming so dangerous, he took the only option possible for himself-a fatal solution that would end both their lives. He realized that as long as they were alive, their father's poisonous legacy would continue to spawn chaos and terror. In this affecting and tragic conclusion to their bloody course of action, Tarrlok's action at least recognized these basic facts.

Tarrlok, despite being such an ambitious person, is plagued by guilt. He soon found out that both he and Amon (who to him was Noatak) share a dark history, designed by their father's power hunger. But when faithless Amon took charge of those who were not benders, Tarrlok could see very well what was implied by his brother being a significant danger to Republic City. The choice to kill himself and Amon at the same time was not an act out of hate; it rather played the tragi-comedic way to blow up our power-hungry father. Our father had become doomed from witlessness in his own life leaving this not unhappy legend of exorcism. It was a necessary tactic in Tarrlok and Noatak's day of reign between earth people hang superstitions out like garment hooks across their figures for a good reason before they dropped off altogether because exhausted like weary children at midnight.")

Tarrlok and Amon are without question one of the most tragic couples in 'The Legend of Korra'. They are also the creation of their abusive father--the same father whose career changed dramatically from one that focused on family law to another where he built an enterprise out of incentive stories instead. But when Tarrlok actually comes face to face with the monster that Amon has become, he decides that he must take drastic action. In a tragic last scene, he takes both his own life and Amon's in an effort to wipe out all traces of his father's poisonous legacy. They reflect the complicated tragedy that was their shared past and the terrible ends to which they would go in order to put an end to it.